How to Summon Units in Multiverse Tower Defense

Summoning is the backbone of Multiverse Tower Defense progression. Every powerful unit enters your roster through the Summon building, where Cash purchases roll random characters across rarity tiers from Common to Secret. Understanding when to summon — and when to save — separates accounts that stall on wave 15 from those that breeze through Raid mode within a week.

Cash flows from completing story universes, daily quests, code redemption, and selling duplicate units. Early players should aim for one reliable D-tier or C-tier carry before chasing Legendary banners. Our Cash currency guide breaks down every income source so you never summon blindly without knowing your next payout.

Luck modifiers appear during weekly 2x events and Admin Abuse celebrations. Save Cash until these windows when possible — the same 500 Cash yields statistically better Mythic rates during boosted periods. Premium members receive +1 Luck in the Time Chamber, a passive boost worth considering if you play daily.

Pray mechanics (referenced in the game description) let you target specific unit pools on certain banners. When a universe event like Undertale launches, banner pools shift to themed units with elevated Secret drop rates. Consult our Undertale event page before spending during limited banners.

Avoid the trap of summoning until your inventory is full. Each unit slot has value — fuse or sell extras to fund the next pull. Track duplicates for fusion at the Fuse building rather than letting them sit unused. Cross-reference pulls with the rarity tier list to instantly know whether a new summon replaces your current lineup.

Codes like MTD and YOUR_PERSONAL_HELPER_FRIEND inject free Cash and Magic Crystals that indirectly fuel summons. Redeem them via our code redemption guide after hitting five wins, then funnel rewards into a single focused banner rather than scattering pulls across unrelated pools.